Static and non-static quantum effects in two-dimensional dilaton gravity

Details Static and non-static quantum effects in two-dimensional dilaton gravity Static and non-static quantum effects in two-dimensional dilaton gravity

2000-07-26

arxiv.org/abs/hep-th/0007207v1

Mod.Phys.Lett. A15 (2000) 1627-1636

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, no figures

Scientific paper

10.1142/S0217732300002085

We study backreaction effects in two-dimensional dilaton gravity. The backreaction comes from an $R^2$ term which is a part of the one-loop effective action arising from massive scalar field quantization in a certain approximation. The peculiarity of this term is that it does not contribute to the Hawking radiation of the classical black hole solution of the field equations. In the static case we examine the horizon and the physical singularity of the new black hole solutions. Studying the possibility of time dependence we see the generation of a new singularity. The particular solution found still has the structure of a black hole, indicating that non-thermal effects cannot lead, at least in this approximation, to black hole evaporation.

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